Ejector mechanism for printing machines



Filed March 2, 1955 Aug. 12, 1958 w. RITZERFELD ETAL 2,847,214

' EJECTOR MECHANISM FOR PRINTING MACHINES 10 Sheets-Sheet 1 InventorsWHkdm RH'zev-4e amA (perkar R H'zar @e Bg-WAA '3. W

Aug.12,1958 w. RITZERFELD E-TAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2, 1955 l0Sheets-Sheet 2 Aug. 12, 1958' -w. RITZERFELD ETAL 23 5 EJECTOR MECHANISMFOR PRINTING MACHINES Filed March}, 1955 10 Sheets-Sheet s Aug. 12, 1958w. RITZERFELD ETAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2, 1955IOSheets-Shet 4 Av FM fpe Inventors wmamQvvzerhu W Cvzvkav @H'zev $66Aug. 12, 1958 w. RITZEIQFELD ETAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2. 1955 1oSheets-Sheet 5 w. RITZERFELD E'rAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2, 1955 Aug. '12,1958 .10 Sheets-sheet 6 1958 fi-w. RITZERFELD ETAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2, 1955 I IIOflSjheets-Sheet 7 Inventors:

Aug. 1 2, 1958 W-. RITZERFELD ETAL Filed March 2, 1955 Inventors;

23-.Ww2 s. rnldwy 12,1958 w. RITZIIIRIFEALD EI'AL 2,8475214 EJECTORMECHANISM FOR PRINTING MACHINES Filed March 2, 1955 10 Sheets-Sheet 9 '4y I [IA R wmwz e. svm

Aug. l2, 1958 w. RITZERFELD ETAL 2,847,214

EJECTOR MECHANISM FOR PRINTING MACHINES Filed March 2, 1955 v 10Sheets-Sheet 10 jrmentars:

United States Pate t O F EJECTOR MECHANISM FOR PRINTING MACHINES WilhelmRitzerfeld, Berlin-Dahlem, and Gerhard Ritzerfeld, Berlin-Grunewalil,Germany Application March 2, 1955, Serial No. 491,574

Claims priority, application Germany 'March '8, 1954 .13 Claims. (Cl.271-64) The present invention relates to ejector mechanism for printingmachines and more particularly to ejector mechanism for rotaryduplicating machines of the type in which moistened sheets are imprintedby an inked printing foil.

It is one object of the present invention to provide an ejectormechanism which rapidly ejects printed sheets.

It is another object of the present invention to provide an ejectormechanism by which printed sheets are selectively deposited in diiierentreceiving means.

It is a further object of the present invention to provide an ejectormechanism by which printed sheets are selectively deposited on bothsides of the machine so that printed sheets may be returned to thesupply. side of the machine.

It is also an object of the present invention to provide side-trackingswitch means 'in an ejector passage for selectively guiding ejectedprinted sheets into a plurality 'of receiving compartments.

It is a further object of the present invention to provide sensing meansfor automatically and selectively operating the side-tracking switchmeans in accordance with control marks on the supplied sheets.

With these objects in view the present ,inventionmainly consists in aprinting machine which comprises a pair of rotary printing rollers andmovable ejector conveyor means receiving sheets printed by the printingrollers and moving at a speed higher than the peripheral speed of theprinting rollers.

The ejector conveyor means are movable between an inoperative positionand an operative position, and control means are provided .for movingthe ejector conveyor means to the inoperative position during passing ofa sheet through the printingrollers, while the-ejector conveyor meansbecome operative to eject a sheet which is released by the printingrollers.

According-to one embodiment of the present invention the ejectorconveyor meanslinclude arocking transferring table and ejector beltmeans and transporting ejector roller means cooperating with the rockingtransferring table which receives printed sheets in one position andtransfers the sheets to the ejector means in another position.

The transferring table is advantageously made of a transparent materialpermitting inspection of the printed sheets. In the event that thetransferring table is locked in the sheet-receiving position, a pile ofprinted sheets is deposited on the table since the ejector belt meansare inoperative in this position of the table.

According to a preferred embodiment of the present invention, the sheetsare ejected by the ejector means into a guide passage which is providedwith a plurality of side-tracking'switch means associated with aplurality of receiving compartments for receiving assorted printedsheets. The side-tracking switch means are either manually operated, oroperated by sensing means sensing control perforations in the suppliedsheets.

This arrangement permits printing of various *forms 2,847,214 PatentedAug. 12, 19.5.8

ice

which are distinguished by a suitable control mark: The sensing meanssense the control-marks and operate side tracking switches in theejector passage so that, for instance, bill, order blanks, shippingpapers, and similar forms can be automatically assorted in difierentreceiving compartments. Considerable time is saved .inthis manner sincethe asserting of printed .forms is a tedious and time-consumingoperation. Each departmentof an .organization may receive all theprinted copies automatically deposited in one receiving compartment.

According to one embodiment of the present invention, the ejector meansis selectively driven in opposite directions for ejecting printed sheetseither on the supply side of the machine or on the other side of themachine. This is particularly desirable for operating a rotaryduplicating machine which has automatic sheet supply means in order toobtain .a satisfactory piling up of the printed sheets behind theprinting line. The same machine can be used for returning manuallysupplied sheets to the supply side .of the machine which is required forcertain printing operations. It may be also desirable-to selee tivelyeject sheets .of difierent shape, or having different contents on the.supply or on the remote side ofthe machine. Suitable reversingtransmission means are provided for reversing the drive of the ejectormeans.

The .novel features which are considered as .characteristic for theinvention are set forth in particular :in the appended claims. Theinvention itself, however, both as to its construction and its method.ofoperat'ion, together with additional objects and advantages thereof,will be.best understood from the following description of specificembodimentswhenread in connection with the accompanying drawings, inwhich: I

Fig. 1 is a side .elevation of a duplicating machine according to .oneembodiment of ,the .present invention;

Fig. 2 is a cross-sectional view .taken -.0n line 2-:2in Fig. .1; a

Fig. 3 is a fragmentary side elevation of a modified embodiment of thepresentinvention;

.Fig. 4 is a fragmentary side view of the embodiment shown in Fig. 3;.

Fig. 5 illustrates a sheet provided with control perforations;

Fig. 6 illustrates a sheet having another arrangement of controlperforations;

.Fig. 7 is a side elevation of an electrically controlled embodiment ofthe present invention; a

Fig. 8 is a fragmentary .side view .of a ,detail of Fig. .7 shown on an.enlargedscale; 1

.Fig. 9 is a plan view .of the emboldiment shown in ,Fig. 7;

Fig. 1.0 is a side elevation partly in section .of a-modified embodimentof an electrically controlled arrangement according to the presentinvention;

Fig. 12 is a diagram illustrating the electrical circuit for operatingthe embodiments shown in Figs. 7 and 1.0.;

.Fig. 13 is a side elevation of a further embodiment of the presentinvention;

Fig. 14 is a side elevation showing on an enlarged scale a reversingtransmission appliedfin the enibodimentof Fig. 13;

.Fig. .15 is a side elevation illustrating the arrangement of Fig. 14inn different position;

Fig. 16 is a sectional view taken on line C..D in Fig. 13;

Fig. 17 is a side view, partlyin section, of an embodiment of thepresent invention; and

Fig. 18 is a sectional view taken on line E--F in Fig. 17.

Referring now to the drawings, and moreparticularly to the embodimentillustrated in 'Figs. '1 and ,2, a printing drum or roller of aduplicating machine is engaged by the counter-roller 2 along a printingline. The sheet which is to be printed is supplied from the supply table4 and is transported to the cooperating printing rollers 1, 2 by thetransporting rollers 5 and 6. A moistening device 7 is arranged adjacentthe transporting rollers for moistening the sheets as required in aduplicating machine.

The sheet passes between the printing rollers 1, 2 where 1t is printedand is moved to the transferring member 8 which is pivotally mounted onpins 9 for movement between a higher position and a lower position. Theshape of the transferring member 8 is best seen in Fig. 2 from which 'itwill be apparent that member 8 is a table formed with slotted recesses,and actually consists of a plurality of parallel elongated portionsseparated by slots extending in the direction in which the sheet ismoved by the transporting and printing rollers.

An operating member 10 is pivotally connected to the transferring table8 and is actuated for shifting the transferring table by linkage meansincluding a connecting rod 13, and a double armed lever 12 which carriesa cam follower roller engaging the periphery of a cam means 11. Cammeans 11 is connected to the duplicating roller 1 for rotationtherewith, and consequently the transferring table is raised and loweredin accordance with the position of the printing roller. The arrangementis such that the transferring table receives a printed sheet in itshigher position, and is thereupon shifted to its lower position.

Locking means are provided for locking the operating means for thetransferring table 8 and include a lever 14 connected to lever 10 andactuated by an operating rod 15. The operating rod 15 is locked when thetransferring table 8 is raised by a locking projection 17 engaging thecutout 16 in the operating rod 15.

Underneath the transferring table 8, ejector belt means are arrangedwhich include a plurality of ejector belts 18 guided about rollers 19.The drive rollers 19 are driven by means which will be describedhereinafter in greater detail and at such speed that the ejector beltmeans 18 move at a speed higher than the peripheral speed of theprinting rollers 1 and 2. Y

A plurality of ejector belts 18, best seen in Fig. 2, are provided whichare spaced from each other distances corresponding to spacing of theslots in the transferring table 8 so that the ejector belts 18 projectinto the slots of the transferring table 8 when the same is in its lowerposition. The conveying surfaces of the ejector belt means 18 arelocated at the level of the table surface so that sheet supported on thetable surface is engaged by the ejector belt means transported along thetable 8. Transporting ejector rollers 30 are mounted on levers which arepivotally connected to the table 8 and tend to assume a position inwhich the rollers 30 frictionally engage the ejector belt means 18. Asheet on the transferring table 8 is urged by the freely rotatablerollers 30 into engagement with the ejector belt means 18.

A table extension 21 is pivotally connected by pivot pins 9 to thetransferring table 8 and is provided with an upturned end wallpreventing a sliding of sheets beyond the edge of the table. The tableextension 21 can be pivoted into a position in which it does not projectbeyond the casing of the machine in order to facilitate shipping of theapparatus. Preferably, the table 8 is made of a transparent materialpermitting inspection of the printed sheet during the printingoperation. Plexiglas is advantageously used for this purpose.

A receiving means such as a box is provided at the end of the ejectorbelt means 18 for receiving ejected sheets. The supply table 4 isprovided with a pivoted extension 22 which is turned up, when required,to facilitate access to the receiving box 20. Since the ejector beltmeans move in a direction opposite to the direction of movement of thesheet-engaging peripheral portions of the printing rollers 1 and 2, thesheets are returned to the receiving means 20.

machine isdn'ven by a motor 23 driving a belt 24 which passes over apulley which is fixed to a pinion 25 meshing with a gear 26 connected tothe duplicating roller 1 for rotation therewith. The drive belt 24 isguided over a pulley 27 which is connected by gear means 28 to pulleyand belt means 29 including a pulley driving the shaft of the driverollers 19 of the ejector belt means 18.

During operation of the machine, sheets are consecutively supplied tothe printing rollers 1 and 2, printed and deposited on the transferringtable 8 in its raised position, whereupon the cam means 11 effectlowering of the transferring table 8 into the position illustrated inFig. 2 in which the ejector belt means 18 and the counter-rollers 30engage the sheet and eject it into the receiving means 20. It will beunderstood that transferring table 8 and the ejector belt means 18constitute ejector conveyor means for ejecting printed sheets. Aspointed out above, the ejector belt means 18 move at a speed higher thanthe peripheral speed of the printing rollers 1, 2 so that each printedsheet is ejected into the receiving means 20, and the table 8 isreturned to its higher position before the next following sheet haspassed through the printing rollers 1 and 2. While the sheets are inprinting position between rollers 1 and 2, the ejector conveyor meansare inoperative.

In the embodiment illustrated in Figs. 3 and 4, the duplicating roller 1is provided with attaching means for attaching a printing foil 1a andcooperates with the roller 2 as described with reference to theembodiment of Fig. 1. Transporting roller means 32 are urged byresilient means, not shown, into engagement with a drum-shaped ejectorroller 31, as best seen in Fig. 4. The ejector roller 31 is driven atsuch rotary speed that its peripheral speed exceeds the peripheral speedof the printing rollers 1 and 2. The printing sheet is engaged by theejector roller means 31 and 32 directly after passing through theprinting line defined by the engaging surfaces of the printing rollers 1and 2. Due to the high speed of the ejector roller means 31, 32, thesheet is ejected at high speed into a passage defined by the guide means35, 36 which are illustrated to comprise a guide wall 36 and anotherwall 35 which is partly formed of adjacent guide plates. These platesare portions of the side-tracking switch means 47, 48 and 49. Eachsidetracking switch means is movable between an inoperative position inwhich its guide plate is located in the general plane of the wall 35 anda position blocking the passage between the walls of the guide means 35,36. The switches 47 and 49 are shown in inoperative positions, and theswitch 18 is shown in operative position blocking the passage betweenthe walls 35 and 36 for side-tracking sheets passing through thepassage. Each side-tracking switch 47, 48, 49 is associated with thereceiving means 51, 52, 53, and it will be understood that the operativeswitch 38 will guide the sheet into the receiving means 52. At the endof the guide means 35,, 36, another receiving means 30 is provided. Theswitches 47, 48, 49 are operated by operating means comprising thelevers 41-46 and manually operated members 37, 38 and 39 which may belocked by a locking member 40 engaging cut-outs in members 37-39.

In the embodiment illustrated in Figs. 7-9, the ejector roller 31 isdriven by gear means 54-57 from the printing roller 1, and itsperipheral speed is greater than the peripheral speed of the printingrollers 1 and 2. The sheet is either automatically or manually suppliedto the supply rollers 5 and 6. The supply rollers 5 and 6 are alsodriven from the drive means of the printing roller 1 and are rotated bythe gear means 58 to 68. A supplied sheet is transported from the supplyrollers 5 and 6 to the printing line defined by the printing rollers 1and 2 and passes through the sensing means M1 to M5 which at the startof the operation are disconnected from the source of voltage shown inFig. 12 by the open switch 64.

During rotation of the printing roller 1, the cam means 61 engages thecam follower roller 62 of the lever 63.

and closes through lever 63. the main switch 64 so that all sensingmeans M1 to M are connected to the source of voltage when the sheet tobe printed has passed into a position in which its leading edge islocated a few millimeters forwardly of the sensing means M1 to M5.

During further movement of the supplied sheet, the circuit of thesensing means associated with a perforation 65 in the sheet, forinstance the sensing meansM4, is closed so that the associatedelectro-magnetic relay means R4 is energized. The attracted armature ofthe relay operates through a link 66 a spring loaded lever 67 so thatthe lever 68 is turned by its associated spring 108, best seen in Fig. 8and turns the associated side-tracking switch 71 into blocking position.Five. side-tracking switch means 69 to 73 are provided in the embodimentof Fig. 7 which cooperate with receiving compartment means 74 to 78, andan additional receiving means 79 is provided at the end of the passageof the guide means 35, 36 for receiving the sheets when allside-tracking switches are in inoperative positions. Similar to theembodiment shown in Fig. 3, the ejecting roller means 31, 32 eject thesheets with such force into the passage 35, 36 that an ejected sheetpasses through the entire passage unless side-tracked by a switch.

The cam means 61 has a cam track shaped in such manner that the maincontact 64 is opened after the sensing means M1 to M5 have sensed theperforations 65 in a supplied sheet, so that during the same revolutionof the printing roller 1, the sensing means M1 to M5 cannot becomeeffective after a sheet has passed through the same and in the intervalbefore the next sheet is fed to the sensing means. Shortly before arevolution of the printing drum 1 is terminated, the cam 80, which isfixedly connected to the printing roller 1, actuates the lever 82 byraising its cam follower roller 81. The operating lever system 83, 84,85 is downwardly moved and the pins 86 to 91 return the raised operatinglevers 68 of previously actuated switches to initial position. Forinstance, the lever 68 in Fig. 7 points upwardly, since the associatedswitch 71 is in its operative position. When the bar 84 movesdownwardly, the pin 88, best seen in Fig, 8, engages the raised lever 68and pushes the same into the position shown in Fig. 8 in which the lever67, acting as a catch, holds the lever 68 until the relay R4 is againenergized. The clearance means 64, 68 act simultaneously on all switchmeans.

The control perforations 65 in the sheets are best seen in Figs. 5 and6, however, in order to assort sheets which are not perforated, or inorder to eject a sheet into a receiving means other than the oneassociated with the perforation of the sheets, manually operatedkeyboard switch means H1 to H5 are provided. For operating the keyboardswitches H1 to H5, it is first necessary to clear the machine byactuating the clearance key.L, see diagram of Fig. 12, whereby thesensing means M1 to M5 are rendered inoperative. Thereupon, anyone ofthe switches H1 to H5 may be manually operated to eject sheets into thereceiving means R1 to R5 associated with the keys H1 to H5. A multipleswitch 92 is provided which permits operation of all switch means 69 to73 while the machine is running or at a standstill.

Figs. and 11 illustrate an embodiment substantially corresponding to theembodiment described with reference to Fig. 7. However, the sheet is notejected in upward direction, but in horizontal direction, and theejector means are provided in the form of a conveyor belt cooperatingwith a pressure roller.

The sheet is supplied by the transporting rollers 6, 60 to the printingrollers 1, 2 and passes through the sensing means M1 to M5 which areconnected to a set of relays R1 to R6 in the manner illustrated in Fig.12.

The printed sheets fall onto the ejector belt means 93 which moves at aspeed higher than the peripheral speed of the printing rollers 1 and 2and, cooperating with the roller means 32, ejects the printed sheetsinto an assorting receiving means 94, 95. The switches 96 to 101constitute in inoperative position the bottom wall of a guide passage,while the top wall thereof is constituted by a cover 95 which ispivotally mounted on the casing. When the cover 95 is opened, thecompartments of the receiving means 94 are easily accessible for removalof printed and assorted sheets. When the multiple bridging switch 92 isoperated, see Fig. 12, the electro-magnetically controlled side-trackingswitches 96 to 101 are opened by the operating levers 102 to 107 due tothe action of the energized relays R1 to R6 so that all receivingcompartments in the receiving means 94 are accessible.

In the embodiment illustrated in Figs. 13 to 15, the printing rollers 1,2 transport the printed sheets 3 to a pivoted transferring table 8 whichis constructed and operated in the same manner as the transferring table8 described with reference to Figs. 1 and 2. The pivoted transferringtable receives in a raised position the printed sheet, and is thenlowered due to the action of the cam means 11 and the linkage means1115. In its lower position, the transferring table cooperates with theejector belt means 93, as described with reference to Fig. 2, so thatthe sheets are ejected.

In the arrangement of Fig. 13, the direction of movement of the ejectorbelt means 93 can be reversed, so that the sheet is ejected either intothe receiving means 128 or into the receiving means 127. The reversingtransmission means for the ejector belt means 93 are best seen in Figs.14 and 15. The ejector belt 93 passes about rollers 109 and 110. Apulley 111 is connected to the roller 109 about which a belt loop 112passes. The belt loop 112 also passes about a resiliently mounted belttensioning pulley 124 and about a pulley 114 which is freely rotatableon the shaft 113. The belt 112 is driven in two opposite directions bythe reversing pulleys 115, 116, the pulley 115 being effective in theposition of Fig. 14, and the pulley 116 being effective in the positionof Fig. 15. 118 which passes over the transmission pulley 119. Pulley119 is driven by the drive pulley 121 which is rotated by the motor 120,as best seen in Fig. 16. The pulleys 124, 115 and 116 are mounted on ashiftable pulley support 117 permitting shifting of the pulleys 115 and116 between the positions shown in Figs. 14 and 15. The support 117 isoperated by an operating rod 122 provided with two cutouts permittinglocking of the operating rod 122 to the casing wall 123.

In accordance with the position of the operating means 122, thedirection of movement of the belt 112 is reversed, whereby the directionof the sheet-supporting surface of the ejector belt means 93 is alsoreversed so that the ejected sheets are either deposited in thereceiving means 127 or in the receiving means 128 which are located onopposite sides of the printing rollers. It will be understood that thereturn of sheets into the receiving means 127 on the supply side of theprinting rollers will permit a very simple operation in the event thatit is desired to run the sheets a second time through the printingrollers.

The entire reversing pulley transmission is adjustably mounted on theshaft 126 so that the tension of the belt can be adjusted. The belt 125passes over a pulley 125a, see also Fig. 16, which drives the printingroller 1 through gear means 1251:.

Referring now to Fig. 16, the shaft 126 passes through the base of themachine and supports the main bearing 129 in which the hollow shaft 113is mounted. The hollow shaft 113 is provided with a slot 130. The twotransmission pulleys 133 and 135 are freely turnable on shaft 113 andare provided with axially extending key grooves cooperating with amanually operated coupling member 131. A spring 132 urges the couplingmember 131 into a coupling position projecting out of the slot in thehollow shaft 113 for engaging one of the Pulleys 115 and 116' are drivenby a belt transmission pulleys 133 and 135. An operating member 136passes into the interior of the hollow shaft and is connected to thecoupling member 131 for shifting the same in axial direction between twopositions for selectively coupling the transmission pulleys 133 and 135to shaft 113. A disc 134 is arranged between the pulleys 133 and 135 andhas a projection projecting into the slot 130 for pressing the couplingmember 131 into an inoperative position during shifting of the same soas to prevent engagement of both transmission pulleys by the couplingmember 131.

The pulley 119 is fixedly connected with the transmission pulley 135 andoperates the belt 118 by which the ejector belt 93 is driven. The pulleyunit 135, 119 is driven from motor 120 through the belt 137 so that thehollow shaft 113 and the printing roller 1 are operate at differentspeeds by the transmission pulleys 133 and 135 when the coupling member131 is shifted, while the ejector belt 93 is driven at a constantejector speed which is higher than the peripheral speed of the printingrollers.

In the embodiment shown in Figs. 17 and 18, the duplicating roller 1carries a printing foil 1a and cooperates with the counter-roller 2 toprint the supplied sheets which move to the transferring table 8. Thearrangement corresponds to the embodiment described with reference toFig. 13, but the transmission means are arranged in a somewhat differentmanner.

The ejector belt means continuously move about the rollers 109 and 110,and are driven from the pulley 111 which is fixedly connected to roller199. Belts 138 or 139 pass over pulleys 140 and 141 which are freelyrotatable on shaft 113. The coupling member 131 can be shifted forcoupling any one of the pulleys 140 or 141 to the shaft 113 as describedwith reference to Fig. 16. Since the belt 139 is crossed in contrast tobelt 138, the direction of movement of the sheet transporting surface ofthe ejector belt means 93 is reversed when the coupling member 131 isshifted. The crossed belt 139 is guided over a guide pulley 149 whichconsists of two conical portions whereby excessive friction isprevented. The axial shifting of the coupling member 131 is carried outby means of a forked-operating member 136a having projections engaging agrooved disc 13612 which is fixedly secured to the operating rod 136' ofthe coupling member 131.

It will be understood that each of the elements described above, or twoor more together, may also find a useful application in other types ofprinting machines differing from the types described above.

While the invention has been illustrated and described as embodied in asheet ejector and assorting mechanism for a rotary duplicating machine,it is not intended to be limited to the details shown, since variousmodifications and structural changes may be made without departing inany way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist ofthe present invention that others can by applying current knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended to becomprehended Within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. In a rotary duplicating machine, in combination, a pair ofcooperating rotary printing rollers for printing sheets passing betweenthe same in one direction from one side of said printing rollers to theother side of the same; a transferring table pivotally mounted at saidother side of said printing rollers and being movable between a firstposition for receiving printed sheets from said printing rollers and asecond angularly displaced position; ejector means moving in a directionopposite to said one direction at a speed higher than the peripheralspeed of said printing rollers and cooperating with said transferringtable in said second position of the same .to eject sheets supported onsaid transferring table; cam means connected to one of said printingrollers for rotation therewith; linkage means connected to saidtransferring table and ineluding cam follower means cooperating withsaid cam means for moving said transferring table between said positionsof the same in accordance with the angular position of said one printingroller; and receiving means for receiving sheets ejected by said ejectormeans and being located at said one side of said printing rollers.

2. In a printing machine, in combination, a pair of cooperating rotaryprinting rollers for printing sheets passing between the same in onedirection from one side of said printing rollers to the other side ofthe same; a transferring member mounted at said other side of saidprinting rollers and being movable between a first higher position forreceiving printed sheets from said printing rollers and a second lowerdisplaced position; locking means for "locking said transferring memberin said first higher position; ejector means moving in a directionopposite to said one direction at a speed higher than the peripheralspeed of said printing rollers and cooperating with said transferringmember in said second position of the same to eject sheets supported onsaid transferring member; control means driven from said printingrollers and being connected to said transferring member for moving thesame between said positions; and receiving means for receiving sheetsejected 'by said ejector means and being located at said one side ofsaid printing rollers.

3. In a printing machine, in combination, a pair of cooperating rotaryprinting rollers for printing sheets passing between the same in onedirection from one side of said printing rollers to the other side ofthe same; a transferring table pivotally mounted at said other side ofsaid printing rollers and being movable between a first position forreceiving printed sheets from said printing rollers and a secondangularly displaced position, said transferring table being formed witha plurality of parallel slots extending in said one direction; ejectorbelt means moving at a speed higher than the peripheral speed of saidprinting rollers and being located in said slots in said second positionof said transferring table to eject sheets supported on saidtransferring table; control means driven from said printing rollers andbeing connected to said transferring table for moving the same betweensaid positions; and receiving means for receiving sheets ejected by saidejector means.

4. In a printing machine, in combination, a pair of cooperating rotaryprinting rollers for printing sheets passing between the same in onedirection from one side of said printing rollers to the other side ofthe same; a transferring table pivotally mounted at said other side ofsaid printing rollers and being movable between a first position forreceiving printed sheets from said printing rollers and a secondangularly displaced position, said transferring table being formed witha plurality of parallel slots extending in said one direction; ejectorbelt means moving in a direction opposite to said one direction at aspeed higher than the peripheral speed of said printing rollers andbeing located in said slots in said second position of said transferringtable to eject sheets supported on said transferring table; transportingejector roller means movably mounted on said transferring table andtending to engage said ejector belt means in said second position ofsaid transferring table for conveying a sheet; control means driven fromsaid printing rollers and being connected to said transferring table formoving the same between said positions; and receiving means forreceiving sheets ejected by said ejector means and located on said oneside of said printing rollers.

S. In a duplicating machine, in combination, a pair of rotary printingrollers for printing sheets passing between the same in one directionfrom one side to the other side of said printing rollers; 21 tablelocated at said other side of said rollers and being pivotable between afirst position for receiving printed sheets from said printing rollersand a second angularly displaced position, said table being formed witha pluralityof slots extending in said one direction; mov able ejectorconveyor means located at said other side behind said printing rollersfor ejecting printed sheets, said ejector conveyor means located in saidslots in said second position of said table'and including ejector beltsmoving at a speed higher than the peripheral speed of said printingrollers and movably mounted freely rotatable transporting rollerslocated above said ejector belts and tending to frictionally engage saidejector belts in said second position of said table; drive means fordriving said ejector belts and at least one of said printing rollers;manually operated reversing transmission means connecting said drivemeans with said ejector belts for reversing the direction of movement ofthe same; and two receiving means located, respectively, at oppositeends of said ejector Ibelts for receiving sheets ejected by said ejectorconveyor means.

6. In a duplicating machine, in combination, a pair of rotary printingrollers for printing sheets passing between the same in one directionfrom one side to the other side of said printing rollers; a tablelocated at said other side of said rollers and being pivotable between afirst position for receiving printed sheets from said printing rollersand a second angularly displaced position, said table being formed witha plurality of slots extending in said one direction; movable ejectorconveyor means located at said other side behind said printing rollersfor ejecting printed sheets, said ejector conveyor means located in saidslots in said-second position of said table and including ejector beltsmoving at a speed higher than the peripheral speed of said printingrollers and movably mounted freely rotatable transporting rollerslocated above said ejector belts and tending to frictionally engage saidejector belts in said second position of said table; drive roller meansfor driving said ejector belts; a set of first pulleys, one of saidfirst pulleys being connected to said drive roller means for driving thesame; a belt loop passing around said set of first pulleys; a movablesupport movable between two positions; a set of second pulleys mountedon said movable support and including two reversing pulleys, each ofsaid reversing pulleys engaging in one of said two positions of saidsupporting means, said belt loop for moving the same in oppositedirections; and operating means for moving said supporting means betweensaid positions.

7. In a duplicating machine, in combination, a pair of rotary printingrollers for printing sheets passing between the same in one directionfrom one side to the other side of said printing rollers; a tablelocated at said other side of said rollers and being pivotable between afirst position for receiving printed sheets from said printing rollersand a second angularly displaced position, said table being formed witha plurality of slots extending in said one direction; movable ejectorconveyor means located at said other side behind said printing rollersfor ejecting printed sheets, said ejector conveyor means includingejector belts located in said slots in said second position of saidtable and-moving at a speed higher than the peripheral speed of saidprinting rollers and movably mounted freely rotatable transportingrollers located above said ejector belts and tending to frictionallyengage said ejector belts in said second position of said table; driveroller means for driving said conveyor belts; a hollow shaft beingformed with a slot; a pair of freely rotatably transmission pulleysmounted on said hollow shaft; belt and pulley means connecting one ofsaid transmission pulleys with said drive roller means; transmissionmeans connecting said hollow shaft with said printing rollers; drivemotor means for driving said transmission pulleys; and a manuallyoperated coupling member slidably mounted within said hollow shaft foraxial movement, said coupling member being transversely movable between;a position located within said shaft and a coupling position projectingthrough said slot out of said shaft; means urging said coupling memberinto said coupling position; and operating means projecting into saidshaft and being connected to said coupling member for shifting the samein axial direction between one position in. which said coupling memberin said coupling position engages one of said transmission pulleys andanother position in which said coupling member engages the other oftransmission pulleys in said coupling position for coupling therespective transmission pulley to said hollow shaft.

8. In a duplicating machine for forming imprints on moistened copysheets, in combination, a rotary duplicating roller and a counterpressure roller cooperating with each other for printing copy sheetspassing between the same in one direction from one side of saidrollersto the. other side of the same; a transferring table having a topface and being pivotally mounted at said other side. of said rollers formovement between a first higher position for receiving on the top facethereof copy sheets from said rollers and a second lower angularlydisplaced position, said transferring table being formed with aplurality of parallel slots extendingin said one direction; movableejector belt means located underneath said transferring table invertical alignment with said slots and. projecting through said slotsslightly above said top face of said table in said second lower positionof said table to transport and eject printed copy sheets deposited onthe top face of said transferring table; transporting ejector rollermeans movably mounted on said transferring table and being locatedvertically above said slots, said ejector roller means tending to engagesaid ejector belt. means in said second position of said transferringtable for conveying a sheet; control means including cam means driven bysaid duplicating roller, and linkage means injcluding a cam followermeans engaging said cam means, said linkage means being connected tosaid transferring table for moving the same between said positions; andreceiving means for receiving sheets ejected by said ejector belt means.

9. In a duplicating machine for forming imprints on moistened copysheets, in combination, a rotary duplicating roller and a counterpressure roller cooperating with each other for printing copy sheetspassing between the same in one direction from one side of said rollersto the other side of the same; a transferring table having a top faceand being pivotally mounted at said other side of said rollers formovement between a first higher position for receiving on the top facethereof copy sheets from 'said rollers and a second lower angularlydisplaced position, said transferring table being formed with a plu-'rality of parallel slots extending in said one direction;

movable ejector belt means located underneath said transferring table invertical alignment with said slots and projecting through said slotsslightly above said top face of said table in said second lower positionof said table 'and moving in a direction opposite to said one directionto transport and eject printed copy sheets deposited on the top face ofsaid transferring table; transporting ejector roller means movablymounted on said transferring table and being located vertically abovesaid slots, said ejector roller means tending to engage said ejectorbelt means in said second position of said transferring table forconveying a sheet and being inoperative in said first position of saidtransferring table; control means including cam means driven by saidduplicating roller, and linkage means including a cam follower meansengaging said cam means, said linkage means being connected to saidtransferring table for moving the same between said positions; andreceiving means for receiving sheets ejected by said ejector belt means.

10. In a duplicating machine for forming imprints on moistened copysheets, in combination, a'rotary duplicating roller and a counterpressure roller cooperating with each other for printing copy sheetspassing between the same in one direction from one side of said rollersto the other side of the same; a supply table located at said one sideof said rollers and at least partly consisting of a transparentmaterial, said supply table having a pivoted extension; a transferringtable having a top face and being pivotally mounted at said other sideof said rollers for movement between a first higher position forreceiving on the top face thereof copy sheets from said rollers and asecond lower angularly displaced position, said transferring table beingformed with a plurality of parallel slots extending in said onedirection; movable ejector belt means located underneath saidtransferring table in vertical alignment with said slots and projectingthrough said slots slightly above said top face of said table in saidsecond lower position of said table and moving in a direction oppositeto said one direction to transport and eject printed copy sheetsdeposited on the top face of said transferring table; transportingejector roller means movably mounted on said transferring table andbeing located vertically above said slots, said ejector roller meanstending to engage said ejector belt means in said second position ofsaid transferring table for conveying a sheet and being inoperative insaid first position of said transferring table; control means includingcam means driven by said duplicating roller, and linkage means includinga cam follower means engaging said cam means, said linkage means beingconnected to said transferring table for moving the same between saidpositions; and receiving means for receiving sheets ejected by saidejector belt means, said receiving means being located underneath saidsupply table and said pivoted extension of the same so that said copysheets are accessible when said pivoted extension is turned.

11. In a duplicating machine for forming imprints on moistened copysheets, in combination, a rotary duplicating roller and a counterpressure roller cooperating with each other for printing copy sheetspassing between the same in one direction from one side of said rollersto the other side of the same; a transferring table having a top faceand being pivotally mounted at said other side of said rollers formovement between a first higher position for receiving on the top facethereof copy sheets from said rollers and a second lower angularlydisplaced position, said transferring table being formed with aplurality of parallel slots extending in said one direction; lockingmeans for locking said transferring table in said first position;movable ejector belt means located underneath said transferring table invertical alignment with said slots and projecting through said slotsslightly above said top face of said table in said second lower positionof said table and moving in a direction opposite to said one directionto transport and eject printed copy sheets deposited on the top face ofsaid transferring table; transporting ejector roller means movablymounted on said transferring table and being located vertically abovesaid slots, said ejector roller means tending to engage said ejectorbelt means in said second position 12 means for receiving sheetsejected'by said ejector belt means.

12. In a duplicating machine'for forming imprints on moistened copysheets, in combination, a rotary duplicating roller and a counterpressure roller cooperating with each other for printing copy sheetspassing between the same in one direction from one side of said rollersto the other side of the same; a transferring table having table havinga top face and being pivotally mounted at said other side of saidrollers for movement between a first higher position for receiving onthe top face thereof copy sheets from said rollers and a second lowerangularly displaced position, said transferring table being formed witha plurality of parallel slots extending in said one direction; movableejector belt means located underneath said transferring table invertical alignment with said slots and projecting through said slotsslightly above said top face of said table in said second lower positionof said table and moving in a direction opposite to said one directionat a speed substantially higher than the peripheral speed of saidduplicating roller to transport and eject printed copy sheets depositedon the top face of said transferring table; transporting ejector rollermeans movably mounted on said transferring table and being locatedvertically above said slots, said ejector roller means tending to engagesaid ejector belt means in said second position of said transferringtable for conveying a sheet and being inoperative in said first positionof said transferring table; control means including cam means driven bysaid duplicating roller, and linkage means including a cam followermeans engaging said cam means, said linkage means being connected tosaid transferring table for moving the same between said positions; andreceiving mean for receiving sheets ejected by said ejector belt means.

13. In a printing machine, in combination, a pair of cooperating rotaryprinting rollers for printing sheets passing between the same in onedirection from one side of said printing rollers to the other side ofthe same; a transferring member mounted at said other side of saidprinting rollers and being movable between a first higher position forreceiving printed sheets from said printing rollers and a second lowerdisplaced position; ejector means including at least one belt moving ina direction opposite to said one direction at a speed higher than theperipheral speed of said printing rollers, said belts cooperating withsaid transferring member in said second lower position of the same toeject sheets supported on said transferring member; control means drivenfrom said printing rollers and being connected to said transferringmember for moving the same between said positions so that saidtransferring member receives each printed sheet in said first higherposition and thereupon moves with said printed sheet to said secondlower position to transfer the printed sheet to said belt; and receivingmeans for receiving sheets ejected by said ejector means, said receivingmeans being located at said one side of said printing rollers.

References Cited in the file of this patent UNITED STATES PATENTS2,220,283 Ritzerfeld Nov. 5, 1940 2,389,848 Gibson Nov. 27, 19452,590,179 Johnson Mar. 25, 1952

